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(PECL ev >= 0.2.0)
EvLoop::io — Create EvIo watcher object associated with the current event loop instance
$fd
, int $events
, callable $callback
[, mixed $data
= NULL
[, int $priority
= 0
]] )Create EvIo watcher object associated with the current event loop instance.
All parameters have the same meaning as for EvIo::__construct()
Returns EvIo object on success.